/* roulang page: index */
:root{
  --ink:#0E3B36;
  --ink-2:#14635A;
  --celadon:#2FA89A;
  --amber:#E6A03C;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --dark:#0B2422;
  --line:#E3DED3;
  --muted:#6B7A76;
  --text:#182B28;
  --radius-card:14px;
  --radius-btn:8px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(11,36,34,.06),0 8px 24px rgba(11,36,34,.06);
  --shadow-2:0 12px 32px rgba(11,36,34,.10);
  --container:1200px;
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--celadon);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--ink-2);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;color:var(--ink);letter-spacing:.02em;margin:0;line-height:1.4;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--plain{background:var(--bg);}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#F7F5F0;padding:10px 16px;border-radius:0 0 8px 0;z-index:200;}
.skip-link:focus{left:0;color:#F7F5F0;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(11,36,34,.05);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px;}
.nav-right{justify-content:flex-end;gap:18px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:15px;
  color:var(--text);
  padding:4px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;
  background:var(--celadon);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{font-weight:700;color:var(--ink);}
.nav-sub{font-size:14px;color:var(--muted);}
.nav-sub:hover{color:var(--ink);}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--serif);font-weight:700;color:var(--ink);
  justify-self:center;white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--ink);color:#F7F5F0;
  font-family:var(--sans);font-size:13px;font-weight:700;letter-spacing:.06em;
}
.brand-text{font-size:17px;letter-spacing:.02em;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-primary{background:var(--ink);color:#F7F5F0;}
.btn-primary:hover{background:var(--ink-2);color:#F7F5F0;transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:rgba(14,59,54,.08);color:var(--ink);transform:translateY(-1px);}
.btn-amber{background:var(--amber);color:var(--ink);font-weight:700;}
.btn-amber:hover{background:#d9902c;color:var(--ink);transform:translateY(-1px);box-shadow:0 8px 20px rgba(230,160,60,.28);}
.btn-ghost{background:transparent;color:var(--ink);border-color:transparent;text-decoration:underline;text-underline-offset:4px;}
.btn-ghost:hover{color:var(--ink-2);}
.btn-invert{background:#F7F5F0;color:var(--ink);}
.btn-invert:hover{background:#fff;color:var(--ink);transform:translateY(-1px);}
.btn-invert-line{background:transparent;border-color:rgba(247,245,240,.45);color:#F7F5F0;}
.btn-invert-line:hover{border-color:#F7F5F0;color:#F7F5F0;background:rgba(247,245,240,.08);}
.btn-block{width:100%;}

/* 移动端导航 */
.menu-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#fff;color:var(--ink);
  font-size:17px;
  align-items:center;justify-content:center;
  cursor:pointer;
}
.menu-toggle:hover{border-color:var(--ink);}
.nav-cta-mobile{display:none;font-size:14px;font-weight:700;color:var(--ink);background:var(--amber);border-radius:var(--radius-btn);padding:10px 14px;min-height:44px;align-items:center;}
.mobile-drawer{
  position:fixed;inset:0;z-index:120;
  background:var(--bg);
  padding:20px 24px 32px;
  display:none;
  flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  font-size:18px;cursor:pointer;
}
.drawer-group{margin-top:26px;}
.drawer-group-title{font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;margin-bottom:10px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:18px;color:var(--ink);font-weight:500;
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--ink-2);}
.drawer-link.is-active{color:var(--celadon);font-weight:700;}
.drawer-foot{margin-top:auto;padding-top:28px;}
.drawer-note{font-size:14px;color:var(--muted);margin-bottom:14px;}

/* ============ 首屏 ============ */
.hero{padding:72px 0 64px;position:relative;overflow:hidden;}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,168,154,.10),rgba(47,168,154,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:6px 16px 6px 8px;
  font-size:13px;color:var(--muted);letter-spacing:.06em;
  box-shadow:var(--shadow-1);
  margin-bottom:22px;
}
.hero-badge b{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:24px;padding:0 8px;
  border-radius:999px;background:var(--ink);color:#F7F5F0;
  font-size:12px;font-weight:700;letter-spacing:.08em;
}
.hero h1{font-size:40px;line-height:1.32;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--celadon);}
.hero-sub{font-size:17px;color:#3d5450;max-width:600px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;
  margin-top:34px;padding-top:22px;border-top:1px solid var(--line);
}
.trust-bar li{
  display:flex;align-items:center;
  font-size:14px;color:var(--muted);padding:0 16px;
}
.trust-bar li:first-child{padding-left:0;}
.trust-bar li + li{border-left:1px solid var(--line);}
.hero-visual{position:relative;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-2);}
.hero-visual img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);}
.hero-visual::before{
  content:"";position:absolute;inset:0;background:rgba(14,59,54,.08);z-index:1;pointer-events:none;
}
.hero-visual .visual-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(11,36,34,.86);color:#F7F5F0;
  font-size:12px;letter-spacing:.1em;
  padding:7px 14px;border-radius:999px;
}
.hero-visual .visual-corner{
  position:absolute;right:14px;top:14px;z-index:2;
  width:44px;height:44px;border-radius:12px;
  background:rgba(247,245,240,.94);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:15px;
}

/* ============ 板块标题 ============ */
.section-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:40px;}
.section-index{
  flex:0 0 auto;font-family:var(--serif);font-size:15px;font-weight:700;color:var(--celadon);
  letter-spacing:.1em;padding-top:6px;border-top:3px solid var(--celadon);line-height:1;
}
.section-title{font-size:28px;line-height:1.35;}
.section-desc{margin-top:10px;color:var(--muted);font-size:15px;max-width:760px;}
.section-head--row{justify-content:space-between;align-items:flex-end;flex-wrap:wrap;}
.section-head--row .head-text{display:flex;gap:18px;align-items:flex-start;}
.section-more{font-size:14px;color:var(--ink-2);white-space:nowrap;display:inline-flex;align-items:center;gap:6px;min-height:44px;}
.section-more:hover{color:var(--celadon);}

/* ============ 合集目录 ============ */
.catalog-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;}
.catalog-item{
  display:flex;align-items:center;gap:18px;
  padding:22px 6px;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding .2s ease;
}
.catalog-item:hover{background:rgba(255,255,255,.7);}
.catalog-num{
  font-family:var(--serif);font-size:18px;font-weight:700;color:var(--celadon);
  min-width:34px;letter-spacing:.04em;
}
.catalog-body{flex:1;min-width:0;}
.catalog-body h3{font-size:19px;margin-bottom:4px;}
.catalog-body h3 a{color:var(--ink);}
.catalog-body h3 a:hover{color:var(--celadon);}
.catalog-body p{font-size:14px;color:var(--muted);margin:0;}
.catalog-arrow{
  flex:0 0 auto;width:34px;height:34px;border-radius:50%;
  border:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;transition:all .22s ease;
}
.catalog-item:hover .catalog-arrow{background:var(--ink);border-color:var(--ink);color:#F7F5F0;transform:translateX(3px);}

/* ============ 精选条目（横向大卡） ============ */
.feature-list{display:grid;gap:24px;}
.feature-card{
  display:grid;grid-template-columns:5fr 7fr;gap:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#d6d0c3;}
.feature-card:nth-child(even){grid-template-columns:7fr 5fr;}
.feature-card:nth-child(even) .feature-media{order:2;}
.feature-card:nth-child(even) .feature-body{order:1;}
.feature-media{overflow:hidden;}
.feature-media img{width:100%;height:100%;min-height:260px;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.feature-body{padding:30px 32px;display:flex;flex-direction:column;justify-content:center;}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.06em;
  padding:5px 12px;border-radius:999px;
  background:rgba(47,168,154,.12);color:var(--ink-2);
  border:1px solid rgba(47,168,154,.28);
  margin-bottom:14px;align-self:flex-start;
}
.badge--amber{background:rgba(230,160,60,.14);color:#8a5c12;border-color:rgba(230,160,60,.36);}
.feature-body h3{font-size:22px;line-height:1.45;margin-bottom:12px;}
.feature-body h3 a{color:var(--ink);}
.feature-body h3 a:hover{color:var(--celadon);}
.feature-body p{font-size:15px;color:#4a5f5b;margin-bottom:18px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-size:13px;color:var(--muted);}
.meta-row span{display:inline-flex;align-items:center;padding:0 12px;}
.meta-row span:first-child{padding-left:0;}
.meta-row span + span{border-left:1px solid var(--line);}
.meta-row a{color:var(--ink-2);font-weight:500;}

/* ============ 最新信息（CMS） ============ */
.latest-layout{display:grid;grid-template-columns:8fr 4fr;gap:28px;align-items:start;}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.post-card + .post-card{margin-top:20px;}
.post-card--lead{display:grid;grid-template-columns:5fr 7fr;}
.post-card--lead .post-thumb{overflow:hidden;}
.post-card--lead .post-thumb img{width:100%;height:100%;min-height:250px;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.post-card--lead:hover .post-thumb img{transform:scale(1.03);}
.post-card--lead .post-body{padding:28px 30px;display:flex;flex-direction:column;justify-content:center;}
.post-card--lead h3{font-size:21px;line-height:1.45;margin-bottom:10px;}
.post-card--lead h3 a{color:var(--ink);}
.post-card--lead h3 a:hover{color:var(--celadon);}
.post-card--lead p{font-size:15px;color:#4a5f5b;margin-bottom:16px;}
.post-body{padding:24px 26px;}
.post-body h3{font-size:19px;line-height:1.5;margin-bottom:8px;}
.post-body h3 a{color:var(--ink);}
.post-body h3 a:hover{color:var(--celadon);}
.post-body p{font-size:14px;color:var(--muted);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rank-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);
}
.rank-panel h3{font-size:16px;letter-spacing:.04em;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line);}
.rank-list li{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);}
.rank-list li:last-child{border-bottom:none;}
.rank-num{font-family:var(--serif);font-size:15px;font-weight:700;color:var(--celadon);min-width:24px;}
.rank-list a{font-size:14px;color:var(--text);line-height:1.6;}
.rank-list a:hover{color:var(--celadon);}
.rank-date{display:block;font-size:12px;color:var(--muted);margin-top:4px;}
.empty-state{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;color:var(--muted);
}
.empty-state i{font-size:26px;color:var(--celadon);display:block;margin-bottom:14px;}
.empty-state p{margin-bottom:16px;}

/* ============ 相关推荐 ============ */
.rec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.rec-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);}
.rec-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.rec-card:hover img{transform:scale(1.04);}
.rec-media{overflow:hidden;}
.rec-body{padding:18px 20px 22px;}
.rec-num{font-family:var(--serif);font-size:13px;font-weight:700;color:var(--celadon);letter-spacing:.1em;display:block;margin-bottom:8px;}
.rec-body h3{font-size:16px;line-height:1.5;margin-bottom:6px;}
.rec-body h3 a{color:var(--ink);}
.rec-body h3 a:hover{color:var(--celadon);}
.rec-body p{font-size:13px;color:var(--muted);margin:0;}

/* ============ 深色 CTA ============ */
.cta-dark{
  background:var(--dark);color:#F7F5F0;border-radius:var(--radius-card);
  padding:56px 48px;position:relative;overflow:hidden;
}
.cta-dark::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(247,245,240,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(247,245,240,.05) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;}
.cta-dark h2{color:#F7F5F0;font-size:28px;margin-bottom:14px;}
.cta-dark p{color:rgba(247,245,240,.78);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-note{font-size:13px;color:rgba(247,245,240,.6);margin-top:18px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion{border:none;background:transparent;}
.accordion-item{
  background:var(--card);border:1px solid var(--line)!important;border-radius:var(--radius-card)!important;
  overflow:hidden;margin-bottom:14px;box-shadow:var(--shadow-1);
}
.accordion-item.is-active{border-color:rgba(47,168,154,.45)!important;}
.accordion-title{
  display:flex;align-items:center;gap:16px;
  padding:20px 24px!important;font-size:18px!important;font-weight:700;color:var(--ink)!important;
  background:transparent!important;border:none!important;line-height:1.5;
  border-left:3px solid transparent!important;
  font-family:var(--serif);
}
.accordion-title:hover{color:var(--ink-2)!important;}
.accordion-title::before{
  content:"01";flex:0 0 auto;font-family:var(--serif);font-size:14px;color:var(--celadon);
  letter-spacing:.08em;order:-1;
}
.accordion-item:nth-child(2) .accordion-title::before{content:"02";}
.accordion-item:nth-child(3) .accordion-title::before{content:"03";}
.accordion-item:nth-child(4) .accordion-title::before{content:"04";}
.accordion-item:nth-child(5) .accordion-title::before{content:"05";}
.accordion-item:nth-child(6) .accordion-title::before{content:"06";}
.accordion-item.is-active .accordion-title{border-left-color:var(--celadon)!important;}
.accordion-title::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  color:var(--muted);margin-left:auto;border:none!important;
}
.accordion-item.is-active .accordion-title::after{color:var(--celadon);}
.accordion-content{padding:0 24px 24px 24px!important;border:none!important;background:transparent!important;}
.accordion-content p{font-size:16px;color:#4a5f5b;margin:0;padding-left:30px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(247,245,240,.8);padding:64px 0 0;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(247,245,240,.13);color:#F7F5F0;}
.footer-brand .brand-text{color:#F7F5F0;font-family:var(--serif);font-weight:700;font-size:17px;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(247,245,240,.68);}
.footer-col h4{color:#F7F5F0;font-size:15px;letter-spacing:.06em;margin-bottom:16px;}
.footer-links li a{
  display:inline-flex;align-items:center;min-height:44px;
  font-size:14px;color:rgba(247,245,240,.76);
}
.footer-links li a:hover{color:#fff;}
.footer-divider{height:1px;background:rgba(247,245,240,.14);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding:22px 0 28px;font-size:13px;color:rgba(247,245,240,.55);
}
.footer-bottom a{color:rgba(247,245,240,.72);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .nav-left,.nav-right{display:none;}
  .header-inner{grid-template-columns:auto 1fr auto;gap:12px;}
  .brand{justify-self:center;}
  .menu-toggle{display:inline-flex;order:-1;}
  .nav-cta-mobile{display:inline-flex;}
  .section{padding:64px 0;}
  .hero{padding:48px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:2;}
  .hero h1{font-size:32px;}
  .feature-card,.feature-card:nth-child(even){grid-template-columns:1fr;}
  .feature-card:nth-child(even) .feature-media{order:0;}
  .feature-card:nth-child(even) .feature-body{order:0;}
  .latest-layout{grid-template-columns:1fr;}
  .post-card--lead{grid-template-columns:1fr;}
  .rec-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .section-title{font-size:22px;}
  .catalog-list{grid-template-columns:1fr;}
  .catalog-item{padding:18px 0;}
  .cta-dark{padding:36px 24px;}
  .cta-dark h2{font-size:22px;}
  .trust-bar li{padding:0 12px;font-size:13px;}
  .faq-wrap{padding:0;}
  .accordion-title{padding:16px 18px!important;font-size:16px!important;gap:12px;}
  .accordion-content{padding:0 18px 20px 18px!important;}
  .accordion-content p{padding-left:0;}
  .brand-text{font-size:15px;}
  .rec-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:520px){
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .meta-row{font-size:12px;}
  .meta-row span{padding:0 9px;}
}

/* roulang page: article */
:root{
  --ink:#0E3B36;
  --ink-light:#14635A;
  --celadon:#2FA89A;
  --amber:#E6A03C;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --dark:#0B2422;
  --line:#E3DED3;
  --muted:#6B7A76;
  --text:#1B2A27;
  --radius-card:14px;
  --radius-btn:8px;
  --radius-img:12px;
  --shadow:0 1px 2px rgba(11,36,34,.06), 0 8px 24px rgba(11,36,34,.06);
  --shadow-hover:0 12px 32px rgba(11,36,34,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink-light);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:var(--celadon);}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(11,36,34,.05);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  gap:16px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.nav-left{display:flex;align-items:center;gap:4px;}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:8px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:rgba(14,59,54,.05);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--celadon);border-radius:2px;
}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  background:var(--ink);color:#F7F5F0;
  font-family:var(--font-sans);font-size:15px;font-weight:700;letter-spacing:.02em;
  flex:0 0 auto;
}
.brand-text{
  font-family:var(--font-serif);
  font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.06em;
}
.nav-toggle{
  display:none;width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:8px;
  cursor:pointer;transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:#fff;border-color:var(--celadon);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease;
  text-align:center;
}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--ink);color:#F7F5F0;}
.btn-primary:hover{background:var(--ink-light);color:#fff;transform:translateY(-1px);}
.btn-amber{background:var(--amber);color:#0B2422;}
.btn-amber:hover{background:#d99229;color:#0B2422;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(14,59,54,.08);color:var(--ink);}
.btn-light{background:#F7F5F0;color:var(--ink);}
.btn-light:hover{background:#fff;color:var(--ink);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(247,245,240,.42);color:#F7F5F0;}
.btn-outline-light:hover{background:rgba(247,245,240,.14);color:#fff;}

/* ============ 移动抽屉 ============ */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--bg);
  padding:20px 24px 32px;
  transform:translateX(100%);
  transition:transform .28s ease;
  display:none;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border-radius:8px;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:20px;color:var(--ink);
}
.drawer-group-title{
  font-size:12px;letter-spacing:.18em;color:var(--muted);
  margin:22px 0 10px;text-transform:uppercase;
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 4px;
  font-size:18px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--celadon);}
.drawer-cta{margin-top:28px;}
.drawer-cta .btn{width:100%;}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(255,255,255,.55);}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:16px 0;font-size:14px;color:var(--muted);
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--celadon);}
.crumbs .sep{color:#C9C2B4;}
.crumbs .current{color:var(--ink);}

/* ============ 文章布局 ============ */
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,780px) 300px;
  gap:56px;
  justify-content:center;
  padding-top:48px;
  padding-bottom:88px;
  align-items:start;
}
.article-main{min-width:0;}
.article-header{padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:34px;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(47,168,154,.12);color:#1c7a70;
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.article-title{
  font-family:var(--font-serif);
  font-size:36px;line-height:1.38;color:var(--ink);
  margin:16px 0 18px;font-weight:700;letter-spacing:.01em;
  word-break:break-word;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;font-size:14px;color:var(--muted);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C9C2B4;display:inline-block;}
.meta-row .num{font-variant-numeric:tabular-nums;letter-spacing:.04em;}
.share-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--ink);cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.share-btn:hover{border-color:var(--celadon);color:var(--ink);background:rgba(47,168,154,.06);transform:translateY(-1px);}

/* 移动端折叠目录 */
.mobile-toc{
  margin:0 0 30px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px 18px;
}
.mobile-toc summary{
  cursor:pointer;font-size:15px;font-weight:600;color:var(--ink);list-style:none;
  display:flex;align-items:center;justify-content:space-between;min-height:32px;
}
.mobile-toc summary::-webkit-details-marker{display:none;}
.mobile-toc summary::after{content:"＋";color:var(--celadon);font-size:16px;}
.mobile-toc[open] summary::after{content:"－";}
.mobile-toc .toc-list{margin-top:12px;}

/* ============ 正文排版 ============ */
.article-body{
  font-size:16px;line-height:1.85;color:var(--text);
  counter-reset:h2c;
  word-break:break-word;
}
.article-body > p:first-child{font-size:17px;color:#2A3A36;}
.article-body p{margin:0 0 1em;}
.article-body h2{
  font-family:var(--font-serif);
  font-size:26px;line-height:1.5;color:var(--ink);
  margin:2em 0 .8em;
  display:flex;align-items:baseline;gap:12px;
  counter-increment:h2c;
}
.article-body h2::before{
  content:counter(h2c,decimal-leading-zero);
  font-family:var(--font-sans);font-size:14px;font-weight:700;
  color:var(--celadon);letter-spacing:.06em;flex:0 0 auto;
}
.article-body h3{font-size:19px;color:var(--ink);margin:1.6em 0 .6em;line-height:1.6;}
.article-body h4{font-size:17px;color:var(--ink-light);margin:1.4em 0 .5em;}
.article-body a{color:var(--ink-light);text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(47,168,154,.5);}
.article-body a:hover{color:var(--celadon);}
.article-body strong{color:var(--ink);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;
  border-left:3px solid var(--ink);
  background:#fff;border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--ink-light);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul{margin:0 0 1.3em;padding-left:0;list-style:none;}
.article-body ul li{position:relative;padding-left:24px;margin-bottom:.6em;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--celadon);
}
.article-body ol{margin:0 0 1.3em;padding-left:0;list-style:none;counter-reset:oli;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:.6em;counter-increment:oli;}
.article-body ol li::before{
  content:counter(oli) ".";position:absolute;left:0;top:0;
  color:var(--celadon);font-weight:700;font-size:14px;line-height:1.9;
}
.article-body img{
  border-radius:var(--radius-img);
  margin:1.6em auto;
  box-shadow:var(--shadow);
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;background:#fff;border-radius:var(--radius-img);overflow:hidden;}
.article-body table th{background:var(--ink);color:#F7F5F0;text-align:left;padding:12px 16px;font-weight:600;font-size:14px;letter-spacing:.02em;}
.article-body table td{padding:12px 16px;border-bottom:1px solid var(--line);}
.article-body table tbody tr:nth-child(even){background:#FBFAF6;}
.article-body table tbody tr:last-child td{border-bottom:none;}
.article-body hr{border:none;height:1px;background:var(--line);margin:2.2em 0;}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:92px;}
.side-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;
  box-shadow:var(--shadow);
}
.side-card h3{font-size:16px;color:var(--ink);margin:0 0 14px;}
.toc-list{list-style:none;font-size:14px;}
.toc-list li{margin-bottom:6px;}
.toc-list a{
  display:block;padding:6px 0 6px 12px;
  border-left:2px solid var(--line);
  color:var(--muted);line-height:1.6;
  transition:border-color .2s ease,color .2s ease;
}
.toc-list a:hover{color:var(--celadon);border-left-color:var(--celadon);}
.rank-list{list-style:none;}
.rank-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);}
.rank-item:last-child{border-bottom:none;padding-bottom:0;}
.rank-num{font-size:13px;font-weight:700;color:var(--celadon);letter-spacing:.06em;padding-top:3px;}
.rank-item a{font-size:15px;color:var(--ink);line-height:1.6;}
.rank-item a:hover{color:var(--celadon);}
.side-note{font-size:14px;color:var(--muted);line-height:1.8;margin:0;}

/* ============ 标签 / CTA / 相关 ============ */
.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:42px;padding-top:24px;border-top:1px solid var(--line);
}
.tag-label{font-size:14px;color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--ink);
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.tag:hover{border-color:var(--celadon);color:var(--ink);background:rgba(47,168,154,.06);}

.cta-strip{
  position:relative;overflow:hidden;
  margin-top:44px;padding:34px 32px;
  background:var(--dark);border-radius:16px;
  display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:32px 32px;
}
.cta-text{position:relative;max-width:520px;}
.cta-text h3{font-family:var(--font-serif);font-size:22px;color:#F7F5F0;margin-bottom:8px;}
.cta-text p{margin:0;font-size:14px;line-height:1.8;color:rgba(247,245,240,.72);}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;}

.related{margin-top:52px;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px;}
.section-head h2{font-family:var(--font-serif);font-size:22px;color:var(--ink);}
.section-head .more{font-size:14px;color:var(--ink-light);border-bottom:1px solid rgba(47,168,154,.4);}
.related-list{display:grid;gap:14px;}
.related-item{
  display:flex;gap:16px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8D1C3;}
.related-thumb{
  width:132px;height:92px;flex:0 0 auto;
  border-radius:var(--radius-img);object-fit:cover;
  background:#F1EEE6;
}
.related-thumb.placeholder{
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--celadon);color:var(--celadon);
  font-size:13px;font-weight:700;letter-spacing:.06em;
}
.related-body{min-width:0;}
.related-body h3{font-size:17px;line-height:1.5;margin-bottom:6px;color:var(--ink);}
.related-body h3 a{color:var(--ink);}
.related-body h3 a:hover{color:var(--celadon);}
.related-body p{margin:0;font-size:14px;color:var(--muted);line-height:1.7;}

.back-row{display:flex;flex-wrap:wrap;gap:18px;margin-top:34px;}
.link-inline{font-size:15px;color:var(--ink-light);border-bottom:1px solid rgba(47,168,154,.4);padding-bottom:2px;}

/* ============ 空态 ============ */
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow);
}
.empty-icon{
  width:56px;height:56px;border-radius:14px;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,168,154,.12);color:var(--celadon);
  font-size:22px;font-weight:700;font-family:var(--font-serif);
}
.empty-state h2{font-family:var(--font-serif);font-size:22px;color:var(--ink);margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:22px;}
.empty-state .btn{min-width:180px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:rgba(247,245,240,.78);
  padding:64px 0 28px;font-size:14px;line-height:1.8;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--ink);}
.footer-brand .brand-text{
  color:#F7F5F0;font-family:var(--font-serif);
  font-size:17px;font-weight:700;letter-spacing:.06em;
}
.footer-col h4{color:#F7F5F0;font-size:15px;margin:0 0 16px;font-weight:600;letter-spacing:.04em;}
.footer-col p{margin:0;color:rgba(247,245,240,.72);}
.footer-links{list-style:none;}
.footer-links li{margin-bottom:4px;}
.footer-links a{
  display:inline-flex;align-items:center;
  min-height:44px;color:rgba(247,245,240,.78);font-size:14px;
}
.footer-links a:hover{color:#fff;}
.footer-divider{height:1px;background:rgba(247,245,240,.14);margin:40px 0 20px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;
  justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(247,245,240,.6);
}
.footer-bottom a{color:rgba(247,245,240,.72);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;gap:40px;}
}
@media (max-width:1023px){
  .container{padding:0 20px;}
  .header-inner{grid-template-columns:44px 1fr 44px;}
  .nav-left{display:none;}
  .nav-right .nav-link,.nav-right .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand{justify-self:center;}
  .mobile-drawer{display:block;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px;padding-top:32px;padding-bottom:64px;}
  .article-side{display:none;}
  .article-title{font-size:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .article-title{font-size:27px;}
  .crumbs{font-size:13px;padding:14px 0;}
  .cta-strip{padding:26px 22px;}
  .cta-text h3{font-size:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .related-thumb{width:104px;height:76px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .empty-state{padding:44px 22px;}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .related-item{flex-direction:column;align-items:flex-start;}
  .related-thumb{width:100%;height:170px;}
  .share-bar .share-btn{flex:1 1 auto;justify-content:center;}
}
@media (max-width:520px){
  .article-title{font-size:24px;}
  .article-body{font-size:15.5px;}
  .article-body table{font-size:14px;}
}

/* roulang page: category1 */
:root{
  --ink:#0E3B36;
  --ink-2:#14635A;
  --green:#2FA89A;
  --amber:#E6A03C;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --dark:#0B2422;
  --line:#E3DED3;
  --muted:#6B7A76;
  --text:#1B2B28;
  --body-soft:#3E4F4B;
  --radius-card:14px;
  --radius-btn:8px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(11,36,34,.06),0 8px 24px rgba(11,36,34,.06);
  --shadow-lg:0 12px 32px rgba(11,36,34,.10);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --num:Inter,"Helvetica Neue",system-ui,-apple-system,Arial,sans-serif;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--green);}
p{margin:0 0 1em;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:.02em;color:var(--ink);margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
::selection{background:rgba(47,168,154,.22);}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.grid-x > .cell{min-width:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(11,36,34,.05);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.nav-left{
  display:flex;
  align-items:center;
  gap:4px;
  justify-self:start;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:10px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:6px;
  height:2px;
  background:var(--green);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover::after,
.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link--minor{color:var(--muted);font-size:15px;}
.nav-link--minor::after{display:none;}
.nav-link--minor:hover{color:var(--ink);}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  padding:4px 6px;
  border-radius:10px;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:10px;
  background:var(--ink);
  color:#F7F5F0;
  font-family:var(--num);
  font-size:15px;
  font-weight:700;
  letter-spacing:.06em;
  transition:background-color .2s ease;
}
.brand:hover .brand-mark{background:var(--ink-2);}
.brand-name{
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  white-space:nowrap;
}
.nav-right{
  display:flex;
  align-items:center;
  gap:14px;
  justify-self:end;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 20px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-primary{background:var(--ink);color:#F7F5F0;}
.btn-primary:hover{background:var(--ink-2);color:#fff;transform:translateY(-1px);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:rgba(14,59,54,.08);color:var(--ink);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(247,245,240,.45);color:#F3EFE7;}
.btn-outline-light:hover{background:rgba(247,245,240,.14);color:#fff;}
.btn-amber{background:var(--amber);color:var(--dark);}
.btn-amber:hover{background:#d9902c;color:var(--dark);transform:translateY(-1px);}
.btn-ghost{
  background:transparent;
  border-color:transparent;
  color:var(--ink);
  padding:8px 4px;
  text-decoration:underline;
  text-underline-offset:4px;
}
.btn-ghost:hover{color:var(--green);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:var(--bg);
  padding:20px 20px 28px;
  display:flex;
  flex-direction:column;
  transform:translateX(-100%);
  transition:transform .28s ease;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}
.drawer-brand{display:inline-flex;align-items:center;gap:10px;}
.drawer-brand .brand-name{font-size:17px;}
.drawer-close{
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  font-size:22px;
  line-height:1;
  color:var(--ink);
  cursor:pointer;
}
.drawer-close:hover{border-color:var(--green);color:var(--green);}
.drawer-group{
  margin:26px 0 8px;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--muted);
  text-transform:uppercase;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-link{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:6px 2px;
  font-size:17px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--ink);font-weight:700;}
.drawer-link:hover{color:var(--green);}
.drawer-cta{margin-top:auto;width:100%;margin-top:28px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:14px;
  color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--green);}
.crumb .sep{color:#C9C2B4;}
.crumb .current{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.page-hero{padding:64px 0 76px;background:var(--bg);}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(47,168,154,.12);
  color:var(--ink-2);
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
}
h1{
  font-size:40px;
  line-height:1.32;
  margin:20px 0 16px;
}
.lead{
  font-size:17px;
  color:var(--body-soft);
  max-width:620px;
  margin:0 0 28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.trust-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  margin-top:28px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
}
.trust-bar span{display:inline-flex;align-items:center;}
.trust-bar span + span::before{
  content:"·";
  margin:0 12px;
  color:#C9C2B4;
}
.hero-figure{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(14,59,54,.08);
}
.fig-index{
  position:absolute;
  right:14px;
  bottom:14px;
  z-index:2;
  padding:6px 12px;
  border-radius:999px;
  background:rgba(11,36,34,.74);
  color:#F7F5F0;
  font-family:var(--num);
  font-size:12px;
  letter-spacing:.14em;
}
.fig-placeholder{
  display:flex;
  align-items:center;
  justify-content:center;
  aspect-ratio:4/3;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  color:var(--ink-2);
  font-family:var(--serif);
  font-size:20px;
}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section--alt{background:#fff;}
.section--dark{background:var(--dark);color:#EFEDE7;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  font-family:var(--num);
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--green);
}
.section-label::before{
  content:"";
  width:26px;
  height:1px;
  background:var(--green);
}
.section h2{font-size:28px;margin-bottom:14px;}
.section-sub{color:var(--muted);margin:0;font-size:16px;}
.section--dark h2{color:#F3EFE7;}
.section--dark .section-sub{color:#A9BDB8;}

/* ---------- metric cards ---------- */
.metric-row{margin-left:-12px;margin-right:-12px;}
.metric-row > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.metric-card{
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(47,168,154,.45);}
.metric-num{
  font-family:var(--serif);
  font-size:30px;
  font-weight:700;
  line-height:1.2;
  color:var(--ink);
}
.metric-label{
  margin-top:6px;
  font-family:var(--num);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--green);
}
.metric-desc{margin:12px 0 0;font-size:15px;color:var(--body-soft);}

/* ---------- info cards ---------- */
.info-card{
  position:relative;
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px 26px 28px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.info-card::before{
  content:"";
  position:absolute;
  left:0;
  top:26px;
  bottom:26px;
  width:3px;
  border-radius:3px;
  background:var(--green);
  opacity:.85;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(47,168,154,.45);}
.info-index{
  display:block;
  font-family:var(--num);
  font-size:12px;
  letter-spacing:.18em;
  color:var(--green);
  margin-bottom:10px;
}
.info-card h3{font-size:20px;margin-bottom:10px;}
.info-card p{margin:0;font-size:15px;color:var(--body-soft);}
.info-row > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.info-row{margin-left:-12px;margin-right:-12px;}

/* ---------- step timeline ---------- */
.step-list{position:relative;max-width:860px;}
.step-item{
  position:relative;
  padding:0 0 34px 74px;
}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";
  position:absolute;
  left:19px;
  top:46px;
  bottom:0;
  width:2px;
  background:var(--line);
}
.step-item:last-child::before{display:none;}
.step-num{
  position:absolute;
  left:0;
  top:0;
  width:40px;
  height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--green);
  color:var(--ink);
  font-family:var(--num);
  font-size:14px;
  font-weight:700;
}
.step-title{font-size:20px;margin:6px 0 8px;}
.step-text{margin:0;color:var(--body-soft);font-size:16px;}

/* ---------- feature ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:44px;
  align-items:center;
}
.feature-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-sm);
}
.feature-copy h2{margin-bottom:14px;}
.feature-copy > p{color:var(--body-soft);margin-bottom:24px;}
.check-list{display:grid;gap:18px;}
.check-list li{position:relative;padding-left:26px;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--green);
}
.check-list strong{display:block;font-size:16px;color:var(--ink);margin-bottom:4px;font-weight:600;}
.check-list span{display:block;font-size:15px;color:var(--body-soft);}

/* ---------- faq ---------- */
.qa-list{border-top:1px solid var(--line);}
.qa-item{border-bottom:1px solid var(--line);transition:box-shadow .22s ease,background-color .22s ease;}
.qa-item.is-open{
  box-shadow:inset 3px 0 0 var(--green);
  background:linear-gradient(90deg,rgba(47,168,154,.05),rgba(47,168,154,0) 55%);
}
.qa-question{
  width:100%;
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:22px 18px 22px 18px;
  background:none;
  border:0;
  text-align:left;
  cursor:pointer;
  font-family:var(--serif);
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  min-height:44px;
}
.qa-question:hover{color:var(--ink-2);}
.qa-index{
  flex:none;
  padding-top:6px;
  font-family:var(--num);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--green);
}
.qa-text{flex:1;}
.qa-icon{
  position:relative;
  flex:none;
  width:22px;
  height:22px;
  margin-top:6px;
}
.qa-icon::before,
.qa-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  transition:transform .25s ease;
}
.qa-icon::before{left:0;right:0;top:10px;height:2px;}
.qa-icon::after{top:0;bottom:0;left:10px;width:2px;}
.qa-item.is-open .qa-icon::after{transform:scaleY(0);}
.qa-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.qa-answer p{
  margin:0 0 24px;
  padding:0 18px 0 58px;
  font-size:16px;
  color:var(--body-soft);
}

/* ---------- related links ---------- */
.link-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.link-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  height:100%;
  padding:26px 24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
a.link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(47,168,154,.5);}
.link-card .card-index{
  font-family:var(--num);
  font-size:12px;
  letter-spacing:.18em;
  color:var(--green);
}
.link-card h3{font-size:20px;transition:color .2s ease;}
a.link-card:hover h3{color:var(--green);}
.link-card p{margin:0;font-size:15px;color:var(--body-soft);}
.link-card .arrow{
  margin-top:auto;
  padding-top:14px;
  font-size:15px;
  font-weight:600;
  color:var(--green);
}

/* ---------- cta bar ---------- */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding:28px 32px;
  border-radius:var(--radius-card);
  background:var(--ink);
  color:#F3EFE7;
  border-left:4px solid var(--amber);
}
.cta-bar h2{color:#fff;font-size:22px;margin-bottom:6px;}
.cta-bar p{margin:0;color:#B9CEC9;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--dark);
  color:#D8DEDA;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.site-footer .brand-mark{background:var(--ink-2);color:#F3EFE7;}
.site-footer .brand-text{
  font-family:var(--serif);
  font-size:18px;
  font-weight:700;
  color:#F3EFE7;
}
.footer-col p{color:#A9BDB8;font-size:14px;line-height:1.8;margin:0;}
.footer-col h4{
  font-size:15px;
  color:#F3EFE7;
  margin:0 0 12px;
  letter-spacing:.06em;
}
.footer-links{display:grid;gap:2px;}
.footer-links a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  color:#B9CEC9;
  font-size:15px;
}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-divider{height:1px;background:rgba(247,245,240,.14);margin:36px 0 20px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:#8FA39E;
}
.footer-bottom a{color:#B9CEC9;}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{max-width:1000px;}
  .hero-grid{gap:36px;}
  h1{font-size:36px;}
}
@media (max-width:1023px){
  .nav-left{display:none;}
  .nav-link--minor{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{grid-template-columns:auto 1fr auto;}
  .brand{justify-self:center;}
  .nav-right{justify-self:end;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-figure{order:2;}
  .feature-grid{grid-template-columns:1fr;gap:28px;}
  .link-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:64px 0;}
  .page-hero{padding:44px 0 56px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .page-hero{padding:32px 0 44px;}
  h1{font-size:28px;}
  .section h2{font-size:22px;}
  .lead{font-size:16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .trust-bar{font-size:13px;}
  .trust-bar span + span::before{margin:0 8px;}
  .link-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .step-item{padding-left:62px;}
  .qa-question{font-size:17px;padding:18px 14px;}
  .qa-answer p{padding:0 14px 22px 48px;}
  .cta-bar{padding:24px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .metric-row{margin-left:-8px;margin-right:-8px;}
  .metric-row > .cell{padding-left:8px;padding-right:8px;}
  .info-row{margin-left:-8px;margin-right:-8px;}
  .info-row > .cell{padding-left:8px;padding-right:8px;}
}

/* roulang page: category2 */
:root{
  --ink:#0E3B36;
  --ink-2:#14635A;
  --jade:#2FA89A;
  --amber:#E6A03C;
  --amber-2:#F0AE52;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --dark:#0B2422;
  --line:#E3DED3;
  --muted:#6B7A76;
  --text:#1B2A27;
  --r-card:14px;
  --r-btn:8px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(11,36,34,.06),0 8px 24px rgba(11,36,34,.06);
  --shadow-2:0 12px 32px rgba(11,36,34,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--jade);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--ink-2)}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;letter-spacing:.02em;color:var(--ink);margin:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tint{background:#F1EEE7}
.section--white{background:#FFFFFF}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  height:72px;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{height:60px;background:#fff;box-shadow:0 1px 2px rgba(11,36,34,.06),0 6px 18px rgba(11,36,34,.05)}
.nav-wrap{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}
.nav-left,.nav-right{display:flex;align-items:center;gap:22px}
.nav-right{justify-content:flex-end;gap:14px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  color:var(--ink);font-size:15px;font-weight:500;padding:0 2px;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;background:var(--jade);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--jade)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.brand-center{display:inline-flex;align-items:center;gap:10px;white-space:nowrap}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;background:var(--ink);color:#F7F5F0;
  font-family:var(--mono);font-size:14px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.04em}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--ink);color:#F7F5F0}
.btn-primary:hover{background:var(--ink-2);color:#F7F5F0;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:rgba(14,59,54,.08);color:var(--ink);transform:translateY(-1px)}
.btn-amber{background:var(--amber);color:var(--ink)}
.btn-amber:hover{background:var(--amber-2);color:var(--ink);transform:translateY(-1px)}
.btn-text{
  background:none;border:0;padding:0;min-height:44px;color:var(--ink);font-weight:600;
  text-decoration:underline;text-underline-offset:4px;
}
.btn-text:hover{color:var(--jade)}
.btn-block{width:100%}
.cta-amber{
  display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;
  background:var(--amber);color:var(--ink);border-radius:var(--r-btn);font-size:15px;font-weight:700;
  transition:background .2s ease,transform .18s ease;
}
.cta-amber:hover{background:var(--amber-2);color:var(--ink);transform:translateY(-1px)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:220;background:var(--ink);color:#F7F5F0;
  display:flex;flex-direction:column;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .3s ease,opacity .25s ease,visibility .25s ease;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid rgba(247,245,240,.14)}
.drawer-brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:17px;font-weight:700;color:#F7F5F0}
.drawer-brand .brand-mark{background:#F7F5F0;color:var(--ink)}
.drawer-close{
  width:44px;height:44px;border:1px solid rgba(247,245,240,.3);background:transparent;color:#F7F5F0;
  border-radius:var(--r-btn);font-size:22px;line-height:1;cursor:pointer;
}
.drawer-body{padding:22px 20px;flex:1;overflow-y:auto}
.drawer-group{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:rgba(247,245,240,.55);margin:0 0 12px;
}
.drawer-link{
  display:flex;align-items:center;min-height:52px;color:#F7F5F0;font-size:18px;
  border-bottom:1px solid rgba(247,245,240,.12);
}
.drawer-link:hover{color:var(--amber)}
.drawer-link.is-active{color:var(--amber);font-weight:700}
.drawer-foot{padding:18px 20px 26px;border-top:1px solid rgba(247,245,240,.14)}

/* ---------- 深色横幅页头 ---------- */
.dark-banner{
  position:relative;overflow:hidden;
  background:var(--dark);color:#F7F5F0;
  padding:72px 0 0;
}
.dark-banner::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(247,245,240,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(247,245,240,.045) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.dark-banner .banner-num{
  position:absolute;right:32px;top:-24px;
  font-family:var(--mono);font-size:180px;font-weight:700;line-height:1;
  color:rgba(247,245,240,.06);letter-spacing:-.04em;pointer-events:none;
}
.banner-inner{position:relative;z-index:2;padding-bottom:56px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:rgba(247,245,240,.68);margin-bottom:26px}
.breadcrumb a{color:rgba(247,245,240,.68)}
.breadcrumb a:hover{color:var(--amber)}
.breadcrumb .sep{color:rgba(247,245,240,.35)}
.breadcrumb .now{color:#F7F5F0;font-weight:600}
.banner-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(47,168,154,.16);border:1px solid rgba(47,168,154,.4);
  color:#9FE3D9;font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:20px;
}
.dark-banner h1{
  color:#FFFFFF;font-size:40px;line-height:1.35;margin:0 0 18px;max-width:880px;
}
.banner-lead{max-width:780px;font-size:17px;line-height:1.9;color:rgba(247,245,240,.82);margin:0}
.metric-strip{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid rgba(247,245,240,.16);
}
.metric-item{padding:26px 24px 30px;border-right:1px solid rgba(247,245,240,.1)}
.metric-item:last-child{border-right:0}
.metric-num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--amber);line-height:1.2}
.metric-label{font-size:14px;color:rgba(247,245,240,.72);margin-top:6px}

/* ---------- 通用板块标题 ---------- */
.section-head{max-width:780px;margin-bottom:40px}
.eyebrow{
  display:inline-block;font-family:var(--mono);font-size:13px;font-weight:700;
  letter-spacing:.16em;color:var(--jade);margin-bottom:12px;
}
.section-head h2{
  position:relative;padding-left:16px;font-size:28px;line-height:1.45;margin:0 0 14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--ink);
}
.section-head p{color:var(--muted);font-size:16px;margin:0}

/* ---------- Foundation 网格覆盖 ---------- */
.grid-x{display:flex;flex-wrap:wrap;margin:0}
.grid-x>.cell{padding:0;min-width:0}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.grid-x.grid-margin-y>.cell{margin-bottom:24px}

/* ---------- 核对要点卡片 ---------- */
.check-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px 26px;height:100%;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.check-card .idx{
  display:inline-block;font-family:var(--mono);font-size:12px;font-weight:700;
  letter-spacing:.18em;color:var(--jade);margin-bottom:14px;
}
.check-card h3{font-size:20px;margin-bottom:12px}
.check-card p{color:var(--muted);font-size:15px;line-height:1.85;margin:0 0 18px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(47,168,154,.1);color:var(--ink-2);font-size:13px;font-weight:600;
}
.tag--amber{background:rgba(230,160,60,.16);color:#8A5A11}

/* ---------- 图文卡片 ---------- */
.feature-card{
  display:grid;grid-template-columns:5fr 7fr;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.feature-media{position:relative;overflow:hidden;background:#EDE9E1}
.feature-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform .4s ease}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-media .media-idx{
  position:absolute;left:14px;bottom:14px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:3px 10px;border-radius:999px;background:rgba(11,36,34,.72);
  color:#F7F5F0;font-family:var(--mono);font-size:12px;letter-spacing:.12em;
}
.feature-body{padding:26px 26px 24px;display:flex;flex-direction:column}
.feature-body .badge{
  align-self:flex-start;display:inline-flex;padding:4px 12px;border-radius:999px;
  background:rgba(14,59,54,.08);color:var(--ink);font-size:13px;font-weight:600;margin-bottom:14px;
}
.feature-body h3{font-size:20px;line-height:1.5;margin-bottom:12px;transition:color .2s ease}
.feature-card:hover .feature-body h3{color:var(--jade)}
.feature-body p{color:var(--muted);font-size:15px;line-height:1.85;margin:0 0 18px}
.meta-row{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);font-family:var(--mono);
}
.meta-row .arrow{color:var(--jade);font-weight:700;transition:transform .2s ease;display:inline-block}
.feature-card:hover .meta-row .arrow{transform:translateX(4px)}

/* ---------- 分组归档折叠面板 ---------- */
.accordion-group{display:flex;flex-direction:column;gap:16px}
.acc{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:box-shadow .22s ease;
}
.acc:hover{box-shadow:var(--shadow-2)}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;border-left:3px solid transparent;
  text-align:left;cursor:pointer;color:var(--ink);
  font-family:var(--serif);font-size:18px;font-weight:600;min-height:64px;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.acc-head:hover{background:rgba(47,168,154,.05)}
.acc-head .head-txt{display:inline-flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.acc-head .num{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--jade)}
.acc-head .sub{font-family:var(--sans);font-size:13px;font-weight:400;color:var(--muted)}
.acc.is-open .acc-head{border-left-color:var(--jade);background:rgba(47,168,154,.05)}
.acc-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .25s ease;
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.acc-icon::before{width:14px;height:2px}
.acc-icon::after{width:2px;height:14px;transition:transform .25s ease}
.acc.is-open .acc-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .32s ease}
.acc-panel-inner{padding:4px 24px 22px}
.entry-list{list-style:none}
.entry-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);
  font-size:15px;line-height:1.8;color:#33443F;
}
.entry-list li:last-child{border-bottom:0}
.entry-list .e-idx{font-family:var(--mono);font-size:13px;color:var(--jade);font-weight:700;padding-top:3px;flex:0 0 auto}
.entry-list .e-txt strong{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;border-left:3px solid transparent;
  cursor:pointer;text-align:left;font-family:var(--sans);font-size:17px;font-weight:700;
  color:var(--ink);min-height:64px;transition:border-color .2s ease,background .2s ease;
}
.faq-q:hover{background:rgba(47,168,154,.05)}
.faq-q .q-idx{font-family:var(--mono);font-size:13px;color:var(--jade);margin-right:10px}
.faq-item.is-open .faq-q{border-left-color:var(--jade);background:rgba(47,168,154,.05)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a-inner{padding:2px 24px 22px;color:var(--muted);font-size:15px;line-height:1.85}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:transform .25s ease}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}

/* ---------- 互链 + 细条 CTA ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:32px}
.rel-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(47,168,154,.5)}
.rel-card .rel-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.rel-card .rel-num{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--jade)}
.rel-card h3{font-size:19px;margin-bottom:10px}
.rel-card p{color:var(--muted);font-size:14px;margin:0}
.rel-card .rel-go{display:inline-block;margin-top:14px;font-size:14px;color:var(--jade);font-weight:600}
.slim-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--amber);
  border-radius:var(--r-card);padding:24px 28px;box-shadow:var(--shadow-1);
}
.slim-cta .slim-text h3{font-size:19px;margin-bottom:6px}
.slim-cta .slim-text p{color:var(--muted);font-size:14px;margin:0}
.slim-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#F7F5F0;padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h4{
  color:#FFFFFF;font-size:16px;margin-bottom:18px;letter-spacing:.06em;
}
.footer-col p{color:rgba(247,245,240,.7);font-size:14px;line-height:1.85;margin:0}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--ink)}
.footer-brand .brand-text{color:#FFFFFF;font-size:18px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:4px}
.footer-links a{
  display:inline-flex;align-items:center;min-height:44px;
  color:rgba(247,245,240,.75);font-size:14px;
}
.footer-links a:hover{color:var(--amber)}
.footer-divider{height:1px;background:rgba(247,245,240,.14);margin:40px 0 22px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(247,245,240,.6);
}
.footer-bottom a{color:rgba(247,245,240,.72)}
.footer-bottom a:hover{color:var(--amber)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:inline-flex;justify-self:start}
  .nav-wrap{grid-template-columns:auto 1fr auto;align-items:center}
  .brand-center{justify-self:center}
  .nav-right-mobile{display:inline-flex;justify-self:end}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .metric-item:nth-child(2){border-right:0}
  .metric-item:nth-child(1),.metric-item:nth-child(2){border-bottom:1px solid rgba(247,245,240,.1)}
  .rel-grid{grid-template-columns:1fr}
}
@media screen and (min-width:1024px){
  .nav-right-mobile{display:none}
}
@media screen and (max-width:767px){
  .dark-banner{padding-top:52px}
  .dark-banner h1{font-size:28px}
  .banner-lead{font-size:16px}
  .dark-banner .banner-num{font-size:120px;right:12px;top:0}
  .section{padding:48px 0}
  .section-head h2{font-size:22px}
  .feature-card{grid-template-columns:1fr}
  .feature-media img{aspect-ratio:16/10}
  .slim-cta{flex-direction:column;align-items:flex-start}
  .slim-actions{width:100%}
  .slim-actions .btn{width:100%}
}
@media screen and (max-width:639px){
  .container{padding:0 16px}
  body{font-size:16px}
  .brand-text{font-size:16px}
  .metric-strip{grid-template-columns:1fr}
  .metric-item{border-right:0;border-bottom:1px solid rgba(247,245,240,.1);padding:20px 0}
  .metric-item:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .rel-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .check-card{padding:24px 20px}
  .acc-head,.faq-q{padding-left:18px;padding-right:18px}
  .acc-panel-inner,.faq-a-inner{padding-left:18px;padding-right:18px}
}